diff --git a/mozilla/tools/update-packaging/Makefile.in b/mozilla/tools/update-packaging/Makefile.in
index b2af93ea91a..2bab0c6ab10 100644
--- a/mozilla/tools/update-packaging/Makefile.in
+++ b/mozilla/tools/update-packaging/Makefile.in
@@ -50,7 +50,11 @@ include $(topsrcdir)/toolkit/mozapps/installer/package-name.mk
 STAGE_DIR	= $(DIST)/update
 
 ifneq (,$(filter mac cocoa,$(MOZ_WIDGET_TOOLKIT)))
+ifdef UNIVERSAL_BINARY
+PACKAGE_DIR	= $(DIST)/universal/$(MOZ_PKG_APPNAME)/$(MOZ_APP_DISPLAYNAME).app
+else
 PACKAGE_DIR	= $(DIST)/$(MOZ_PKG_APPNAME)/$(MOZ_APP_DISPLAYNAME).app
+endif
 else
 PACKAGE_DIR	= $(DIST)/$(MOZ_PKG_APPNAME)
 endif